请教高手两道英语选择题8.theproblemisthat,______childrenwhoaregivencow’smilkfrombirthbenefitgreatlyfromit,thosewhohavedrunkitbyacertainagearenotabletotolerateit.A,becauseB.providedC.whereas

　　请教高手两道英语选择题

　　8.theproblemisthat,______childrenwhoare

　　givencow’smilkfrombirthbenefitgreatlyfromit,thosewhohavedrunkitby

　　acertainagearenotabletotolerateit.

　　A,becauseB.providedC.whereas

　　D.though为什么选C,我觉得D也行啊?求解释

　　9.ifyou____me,Ishallbegratefultoyou.

　　A,helpB.willhelp

　　C.arehelpingD.willbehelping这一题选什么,求高手解释